PCM与PLC的通讯(331型及更高级)对诸如PCM的智能任选模块需要服务时,是无法中断CPU的。CPU必须针对服务请求轮询(pl)各个智能任选模块,这可在扫描的任何时刻进行(见图2-4所示流程图)。当智能任选模块已被登记并向CPU发出一个服务请求,这-请求要在系统通讯窗口处理中排队等待处理。
AUTONETIC 66883-707-1 CABLE CONECTOR
FREDERICK ENGINEERING PCB001021 Rev A DACS/SWITCH CARD
REXROTH R90048337 Operated Check Valve
SCIENTIFIC ATLANTA 9950 Insertion Amplifier
AUTONETIC 66877-707-1 MILITARY CABLE CONNECTOR
AUTONETIC 66881-707-1 MILITARY CABLE CONNECTOR
AUTONETIC 66882-707-1 MILITARY CABLE CONNECTOR
AUTONETIC 66889-707-1 MILITARY CABLE CONNECTOR
AUTONETIC 66889-707-1 MILITARY CABLE CONNECTOR 1
AUTONETIC 66886-707-1 MILITARY CABLE CONNECTOR
AUTONETIC 66887-707-1 MILITARY CABLE CONNECTOR
AUTONETIC 66884-707-1 MILITARY CABLE CONNECTOR
AUTONETIC 66885-707-1 MILITARY CABLE CONNECTOR
AUTONETIC 66878-707-1 MILITARY CABLE CONNECTOR
AUTONETIC 66880-707-1 MILITARY CABLE CONNECTOR
AUTONETIC 66875-707-1 MILITARY CABLE CONNECTOR
AUTONETIC 66890-707-1 MILITARY CABLE CONNECTOR
ANGST + PFISTER SNMB 203-100 Control Module
HMI 30220 Emulator
18150087953 点击拨打电话联系我们